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PRECAUTIONS HA-11 < PRECAUTION > C D E F G H J K L M A B HA N O P The oil contained inside the vacuum pump is not compatible with the pump. Close this valve to isolate the service hose from the pump. • For pumps without an isolator, use a hose equipped with a manual shut-off valve near the pump end. Close the valve to isolate the • If the hose has an automatic shut off valve, disconnect the hose from the pump: as long as the hose is connected, the valve is open Some one-way valves open when vacuum is applied and close MANIFOLD GAUGE SET Be certain that the gauge face indicates HFC-134a (R-134a). Make ″ -16 ACME threaded connections for ser- vice hoses. Confirm the set has been used only with refrigerant SERVICE HOSES Be certain that the service hoses display the markings described SERVICE COUPLERS RHA270D SHA533D RHA272D |